Facial Expression And Mastication

Question 1

Scalp boundaries

Question 2

SCALP

Question 3

Viscerocranium: temporal bone

Answer 3

Particular tubercle
Mandibular fossa
Styloid process
Mastoid process
Stylomastoid foremen
Mastoid notch

Question 4

Viscerocranium: mandible

Answer 4

Mandibular condyle
Coronoid process

Question 5

Temporomandibular joint articulation

Answer 5

1. Fibrocartilage disc
   - superior compartment
   - inferior compartment
2. Ligaments
   - joint capsule

Question 6

TMJ motions

Answer 6

Depression vs. Elevation: depression is weaker in the animal kingdom
Protrusion vs. Retrusion/Retraction
Excursion: side to side

Question 7

Temporal fossa: boundaries

Answer 7

Above zygomatic arch
Posterior to the frontozygomatic suture

Question 8

Temporal fossa: contents

Answer 8

Proximal portion of temporalis muscle

Question 9

Infratemporal fossa: boundaries

Answer 9

Below zygomatic arch
Posterior to maxilla
Between
Pterygoid plates and mandible

Question 10

Infra temporal fossa: contents

Answer 10

• optic ganglion
  Distal temporalis muscle
  Lateral and medial pterygoid muscles
  Maxillary urtery”

Question 11

Pterygopalatine fossa: boundaries

Answer 11

Medial: palatine bone
Anterior: the posterior maxilla
Posterior: sphenoid bone

Question 12

Pterygopalatine fossa: contents

Question 13

Facial nerve: CN 7

Answer 13

Originates: lateral pontomedullary junction
Outlets: internal acoustic meatis

Question 14

CN 7 lesion before outlet

Answer 14

All functions will be compromised

Question 15

CN 7 Lesion: after geniculate ganglion, before tympanic cavity

Question 16

CNI lesion: before

Question 17

CN 7 lesion:

Question 18

CN 7 lesions

Question 19

Facial expression branches acronym

Answer 19

Two zebras bit my cookie

Question 20

Facial expression branches

Answer 20

Temporal, zygomatic, buccal, mandibular, cervical, posterior auricular

Question 21

Intra-anastomoses and inter-anastomoses

Question 22

CN 5: trigeminal nerve: 1st division

Answer 22

Originates at middle lateral pons
1. Ophthalmic nerve, pure somatic/chemical sensation
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-
-

Question 23

CN 5: trigeminal nerve: 3rd division

Answer 23

Mandibular nerve
Outlet: foremen ovale
Sensory
1. Terminal cutaneous branch: mental nerve
2. Chemical sensation: taste
Motor
1. Mastication muscles, mendibular depression muscles
2. Hearing
3. Swallowing

Question 24

CN 5: mandibular division muscle innervation

Answer 24

First fibers: tensor tympani, tensor veil palatini, medial pterygoid, meningeal (cutaneous)
Anterior division: temporalis, master, lateral pterygoid, buccal (cutaneous)
Posterior division:

Question 25

Dura mater sensory input

Answer 25

CN 5: migraine
C2-C3: headache originating from neck

Question 26

Dura mater sensory input

Answer 26

CN 5: migraine
C2-C3: headache originating from neck

Question 27

CN 5 shuttle for visceral innovation for what nerves

Answer 27

CN 3: ciliary ganglion w/ division 1 of CN 5
CN 7: pterygopalatine yang lion w/ zygomatic

Question 28

CN 5 shuttle for visceral innovation for what nerves

Answer 28

CN 3: ciliary ganglion w/ division 1 of CN 5
CN 7: pterygopalatine yang lion w/ zygomatic

Question 29

External carotid artery branches (7)

Question 30

Maxillary artery branches

Question 31

Facial venous system

Question 32

Buccinator

Question 33

Orbicularis oculi

Question 34

Zygomaticus major

Question 35

Medial pterygoid muscle

Answer 35

P: (1) medial surface of the lateral pterygoid plate and pyramidal process of palatine bone
(2) tuberosity of maxilla
D: medial mendibular ramus and angle

Question 36

Lateral pterygoid muscle

Question 37

Temporalis muscle

Answer 37

Temporal fossa and temporal fascia
Coronoid process and anterior mandibular ramus
CN 5
Elevate and retract mandible

Question 38

Master muscle

Question 39

Deep facial muscle

Answer 39

Buccinator

Question 40

CN 7 upper motor injury

Answer 40

Paralysis of contralateral face, scalp spared

Question 41

CN 7 lower motor injury

Answer 41

Paralysis of ipsilateral